文献类型：期刊文献

英文题名：Cascading reconstruction to induce highly disordered Fe-Ni(O)OH toward enhanced oxygen evolution reaction

作者：Hua, Wei[1];Sun, Huanhuan[1];Jiang, Mingwei[1];Ren, Lingbo[1];Zhang, Yu[2];Wang, Jian-Gan[1]

机构：[1]Northwestern Polytech Univ, Ctr Nano Energy Mat, Sch Mat Sci & Engn, State Key Lab Solidificat Proc,Shaanxi Joint Lab, Xian 710072, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：10

期号：13

起止页码：7366

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20221311858304);WOS:【SCI-EXPANDED(收录号:WOS:000764255200001)】；

基金：The work is sponsored by the National Natural Science Foundation of China (51772249, 51821091 and 22109044), Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University (CX2021011 and CX2021059), and Fundamental Research Funds for the Central Universities (3102019JC005 and D5000210894).

语种：英文

外文关键词：Nanosheets - Iron compounds - Nanocatalysts - Oxygen

摘要：Rational design of pre-catalysts is a powerful yet challenging strategy to realize high-efficient oxygen evolution reaction (OER) through electrochemical reconstruction. Herein, a well-designed pre-catalyst composed of nickel hexacyanoferrate (NiHCF) nanocubes on crystalline Ni(OH)(2) nanosheets is demonstrated to achieve outstanding OER catalysts via cascading reconstruction. The NiHCF phase experiences a complete reconstruction and simultaneously functions as an inducing mediator to enable the reconstruction of the underneath Ni(OH)(2) to form highly disordered Fe-Ni(O)OH. Benefiting from the cascading reconstruction process, the electrode shows obvious self-activation behavior with a notable overpotential decrease of 92 mV at 10 mA cm(-2) relative to that of the pristine catalysts. Accordingly, the as-activated highly disordered Fe-Ni(O)OH exhibits excellent OER performance with an ultralow overpotential of 242 mV to drive the current density of 10 mA cm(-2) and good stability at about 100 mA cm(-2) over 100 h. The facile cascading reconstruction strategy offers a new perspective for obtaining superior catalysts toward OER.